Tool holder



Nov. 14, 1933. A. WELLINGTON 1,935,493

TOOL HOLDER Filed March 26, 1929 2 Sheets-Sheet l NOV. 14, 1933 W UN N1,935,493

TOOL HOLDER Filed March 26, 1929 2 Sheets-Sheet 2 Patented Nov.l 4 1 9335 i I .v V

mm mm 1 V 1,935,493; a TOJOLVHOLDIEBL V H v LeonardA. Wellington, Keene,N. H. Y Application ar 11 12 1929. Serial 350,034 f 3 Claims.(013279-61: I V I My invention relates to an improvement in .head 8 iscut away as at? so asto allow ready tool holders in which thetool-holder may be access to this screw. adjusted to produce somepredetermined size Fittedover sleeve 4 is a head 8. This .head is and tobe able to remove said tool and again recarried on the sleeve 4 by pivotscrews 9-9 as .5 place the same and at the same time to produce shown inFig. 4, and is adjustable on these pivot- 60 the same size or results ashitherto. screws 9.-9 by the screws 10- -1O arranged at In the arts,especially the mechanical, it is freright-angles thereto as shown inFig. 1, and quently necessary toproduce duplicate. work of capable ofbeing locked by the lock-nuts 11 in a certain size or diameter on theso-called manuany required position. In the outer end of the -10facturing basis. This cannot be done satisfachead 8 is secured'theboring tool 12, which may be 65 torily with one operation or cut, andtwo or of any convenient size or shape for the work inmore cuts oroperations are necessary to protended to be done. This is fastened inplace with duce satisfactory results, according to the amount the twoscrews 13 as shown. of stock to be removed or other contingencies. Itwill be readily seen that sleeve 4 slides onto 15 When there is arepetition of these operations the end 2 of shank 1, and that head 8 isrigidly of the same size or dimensions, it will be seen pivoted on thesleeve4-by the pivot-screws 9, that there will be many adjustmentsnecessary and is adjustable by the screws 10 (in Fig. 2) movwhen toolsthat are now in use are used. It is ing the boring tool radially, as maybe necessary also impracticable to use the same cutting tool to increaseor decrease the effective cutting rafor the so-called roughing andfinishing operadius thereof and to accomplish the desired result. 75

tions, especially in cast-iron, on account of the It will be furtherseen that one purpose of the v wear, etc., and also itis frequentlynecessary to entire device is that the shank 1 is to remain in sharpenthe tools difierently to obtain the best position (in the machine)during the entire use results, according to. the materials that are ofthe device. worked. I-t'will be further seen that with this manner of 80It is also possible to have tools preadjusted so construction it wouldbe possible to have several that when one becomes dull or not capable ofof these heads capable and fitted to be readily producing perfect workit may be removed and placed on the straight ortapered end 2 oi theanother substituted and results accomplished shank l. They may beadjusted, each to the size i, that otherwise would be accomplished onlyby that is to be produced and keep them to that size 85 askilledworkman. until all of the holes have been produced of that In theaccompanying drawings: 7 size. I v 7 Fig. 1 is a side elevation of oneform of the In the arrangement shown'in Figs. 6 and '7, the invention;holder is shown applied to a tool which is mounted Fig. 2 is atransversesectional view on the line stationary, and is used where the workrevolves. 90 2-2 of Fig. 1; The shank 15 is held in a tool-post 16 orother Fig. 3 isa similar view on the line 3-3 of Fig. 1; suitablesupport therefor, and the head and tool Fig. 4 is a similar view on theline 4-4 of Fig. 1; are held and adjusted in the same manner as Fig. 5is a similar view on the line 5-5 of Fig.1; above described. In thisinstance, the work re- 40 Fig. 6 is a plan view of the holder used in avolves relative to the tool to accomplish the bor- 95 slightly differentmanner; and, e ing or cutting operations.

Fig. '7 is a side elevation of the same. By this invention it ispossible to use separate Referring to Figs. 1 to 5 of the drawings,there tools which may be pre-adjusted for the difierent is what iscalled a shank. This is shown in Fig; cuts' of the work that may benecessary or de- 1 at 1. In this case it is tapered to fit a millingsirable, or thetools may be capable of adjustment or boring machine, butit may be of any'conven to the desired size, and, being adjusted, may beient shape to insurerigidity and reasonable consubstituted for othersincapable of efficient use. centricity. This is carried out on theopposite In other words, with this invention the mountend to a straightor slightly tapered end 2, as the ing of the different units is suchthat they may case may be, and is provided with a key 3 to be'insertedor so placed in the operating position Prevent slippage, d also 130insure p a e e as'to be used, removed, and replaced as occasion .to thesame position. Fitted to slip over the key z'mayarise. Any form ofcuttingor'boring-tool 3 and shank 2 is the sleeve 4, which is alsofasmay be used in connection with the invention. tened to the shank 2 bya screw 5 in addition to I claim: g r

a the key as shownin Fig. 3 on the right. The 1. A tool holdercomprising a supporting shank,

a sleeve removably fitted over an end of the shank, a head surroundingthe sleeve in axial alignment with the shank, a cutting tool removablycarried by the head, pivotal means supporting the head on the sleeve toswing the head out of axial alignment with the shank and change thecutting radius of the tool, and means carried by the head and engagingthe sleeve for holding the head in connected with the head and engagingthe sleeve at the opposite end of the head from the tool for adjustingthe head on the pivots.

3. A tool holder comprising a supporting shank constructed to bereceived in a tool support, a sleeve removably mounted on the shank, asetscrew holding the sleeve on the shank, a tool supporting headextending over the sleeve to be sup ported thereby and having a sideopening therein in position to gain access'to the set screw, a toolremovably supported by the outer end of the head, pivot screwsprojecting inwardly from opposite sides of the head adjacent the endthereof supporting the tool and engaging the sleeve for pivotallysupporting the head thereon, and an adjusting screw connected with thehead at the opposite end thereof from the tool and engaging the sleevefor adjusting the head on the pivot screws.

LEONARD A. WELLINGTON.

